"I did try choosing other zones besides Green Hill Zone since people seem to hate that zone apparently"
From the Sonic rabbit hole of YT videos I fell into a long while back, it seemed less like people hated the zone and more like they have growing tired from seeing it. The series has introduced its fans to a wide variety of locations over the last couple of decades yet officially it seems like only IDW Publishing bothers to acknowledge them once in a while in the comics. Fan art isn't much better. Green Hill Zone is just what most artists default to whenever they want to draw more of the Hedgehog. It's easy. It's eye-catching. It's what casual fans will immediately recognize.
On to the drawing, it's pretty obvious where the initial effort went (even if I didn't know this was one of your pieces). It's near-impossible not to be immediately drawn toward Vector as the sights of Tails in a hurry, Sonic resting, and the smaller animals (especially the flickies) are not all that uncommon to find. Charmy wanting to be a little mischievous here is appreciated, too, but it really is difficult not to focus on the croc. I love how you can keep producing fan art of this series and Vector frequently ends up looking like the main protagonist regardless of any other characters you add to it. Sonic and Tails are here, but, once again, they come across as the sidekicks in your works.